OVERVIEW

This Trojan arrives on a system as a file dropped by other malware or as a file downloaded unknowingly by users when visiting malicious sites.

It disables Task Manager, Registry Editor, and Folder Options.

TECHNICAL DETAILS

File Size:

157,184 bytes

File Type:

EXE

Memory Resident:

No

Initial Samples Received Date:

09 May 2013

Arrival Details

This Trojan arrives on a system as a file dropped by other malware or as a file downloaded unknowingly by users when visiting malicious sites.

Installation

This Trojan drops the following copies of itself into the affected system:

%System%\drivers\esentutl.exe

%System%\mqtgsvc.exe

%User Profile%\APPLIC~1\cmstp.exe

%User Profile%\APPLIC~1\clipsrv.exe

(Note: %System% is the Windows system folder, which is usually C:\Windows\System32.. %User Profile% is the current user's profile folder, which is usually C:\Documents and Settings\{user name} on Windows 2000, XP, and Server 2003, or C:\Users\{user name} on Windows Vista and 7.)

Important: Editing the Windows Registry incorrectly can lead to irreversible system malfunction. Please do this step only if you know how or you can ask assistance from your system administrator. Else, check this Microsoft article first before modifying your computer's registry.

In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer

Run

In HKEY_USERS\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Policies\Explorer

Run

In HKEY_CURRENT_USER\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer

In the left panel, double-click the following: HKEY_LOCAL_MACHINE>SOFTWARE>Microsoft>Windows>CurrentVersion>Policies>Explorer

Still in the left panel, locate and delete the key: Run

In the left panel, double-click the following: HKEY_USERS>.DEFAULT>Software>Microsoft>Windows>CurrentVersion>Policies>Explorer

Still in the left panel, locate and delete the key: Run

In the left panel, double-click the following: HKEY_CURRENT_USER>SOFTWARE>Microsoft>Windows>CurrentVersion>Policies>Explorer

Still in the left panel, locate and delete the key: Run

Close Registry Editor.

Step 4

Delete this registry value

[ Learn More ]

[ back ]

Important: Editing the Windows Registry incorrectly can lead to irreversible system malfunction. Please do this step only if you know how or you can ask assistance from your system administrator. Else, check this Microsoft article first before modifying your computer's registry.

In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\policies\Explorer\Run

In the left panel, double-click the following: HKEY_LOCAL_MACHINE>SOFTWARE>Microsoft>Windows>CurrentVersion>policies>Explorer>Run

In the right panel, locate and delete the entry:Esent Utl = "%System%\drivers\esentutl.exe /waitservice"

Close Registry Editor.

Step 5

Restore these modified registry values

[ Learn More ]

[ back ]

Important:Editing the Windows Registry incorrectly can lead to irreversible system malfunction. Please do this only if you know how to or you can seek your system administrator's help. You may also check out this Microsoft article first before modifying your computer's registry.

In HKEY_CURRENT_USER\Software\Microsoft\Windows NT\CurrentVersion\Windows

load = "%User Profile%\APPLIC~1\clipsrv.exe"

To restore registry values this malware/grayware modified:

Open Registry Editor. To do this:

On Windows 2000, XP, and Server 2003: Click Start>Run, type REGEDIT in the text box provided, and then press Enter.

On Windows Vista and 7: Click the Start button, type REGEDIT in the Search input field then press Enter.

In the left panel, double-click the following: HKEY_CURRENT_USER>Software>Microsoft>Windows NT>CurrentVersion>Windows

In the right panel, locate the registry value: load = "%User Profile%\APPLIC~1\clipsrv.exe"

Close Registry Editor.

Step 6

Scan your computer with your Trend Micro product to delete files detected as TROJ_RODECAP.SM. If the detected files have already been cleaned, deleted, or quarantined by your Trend Micro product, no further step is required. You may opt to simply delete the quarantined files. Please check this Knowledge Base page for more information.